Converting Multipoint Locking

[GSD]

My son now has a front door (and back door) with multipoint locking with the result that it has to be positively locked each time they leave. It also has to be locked every time they enter to prevent their two year old simply pulling down on the handle to get out.

As it's obviously tedious to have to do this and very easy to forget with potentially serious consequences is it possible for the locking system to be converted in some way so that it works something like a traditional Yale type and locks automatically every time the door is shut? If so can this be done by a reasonably competent amateur or would it need to be done by a professional locksmith?

 

[Softus]

Surely there's a simpler solution - aren't there childproof door restraints?

Failing that, a simple catch that's too high for a two year old on a dangerously wobbly stool to be able to reach with a spoon tied to a long stick tied to another long stick with a shoelace.

 

[JohnD]

A beggar's latch would do it nicely.